Study Design: As a first step in testing this hypothesis, we will test commonly utilized point of care analysis devices and determine their reliability in predicting transfusion requirements in severely injured trauma patients within 20 minutes after arrival in the emergency department. Furthermore, we will prospectively randomize severely injured patients who require a blood transfusion to receive either stored whole blood and pooled platelets or component therapy (packed red blood cells, fresh frozen plasma, and platelets, our current standard of care) and compare the ability of stored whole blood to reduce transfusion needs and improve clinical outcomes.